logme | Python Logging For Humans

I don't to use Task.Run for this kind of operation, because it's bad.

It's not bad at all. It's just another tool in your tool belt.

It's important to understand how asynchronous methods work. Asynchronous methods all start running synchronously, just like any other method. The magic happens at the first await that acts on an incomplete Task. At that point, await sees the incomplete Task and the method returns. Usually it returns its own incomplete Task, unless the method is async void, then it returns nothing.

Asynchronous is not about how methods run. It's about how methods wait.

So in your code, LogMe() will start running on the same thread. Only when you are waiting for a response will a Task be returned up the call stack, and you're free to await it or not.

The time it takes to setup the request and send it isn't that much. So you won't notice it. But if you were doing something that did do some CPU-intensive work before the request, then it would be appropriate to use Task.Run, since that tells it to start on a different thread, so it doesn't hold you up.

If this was ASP.NET (not Core), then you may benefit from either using Task.Run, or using .ConfigureAwait(false) on the PostAsync, because otherwise it will try to come back to the same synchronization context (the context of the current incoming HTTP request), which means the current request cannot complete before LogMe() completes.

However, if you are going to fire and forget then keep in mind that whatever started the operation will have no idea if it succeeds. You should use try/catch inside LogMe if you want to log failures somewhere else (a text file or something). PostAsync will throw an exception if there was a problem sending the request (DNS lookup failure, no response, etc).

com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 2 path

The error is from the Gson library.

Why this Error, What this error means?

This error simply means Gson can't deserialize JSON to Java Object. because Gson is expecting a JSON object and unexpectedly it received a JSON Array from the response.

How to Fix it?

You can fix it easily by changing the return type of Observable getTodos(); to Observable> getTodos();

Hope this helps!!

Happy Coding :)

Disclaimer:

• I have never used the Jcabi plugin before, normally I always use AspectJ Maven plugin, also for binary weaving.
• I have never used the Kotlin language before, normally I use Java or Groovy.

Now some things are not okay in your aspect:

• It must not be abstract, otherwise no instance can be created.
• For void methods it must be able to return null, so the Kotlin return type should be Any?
• You should proceed() in between the before and after log messages, otherwise the log output will be wrong.
• Assuming that your classes, especially the annotation class, do not reside in the default package but have an actual package name, you need to use the fully qualified class name in your pointcut, e.g. @annotation(de.scrum_master.app.LogMe)
• Using an aspect class name Aspect, i.e. the same name as the @Aspect annotation, just in another package, is kind of ugly. You should rename it.

For me this works nicely:

To get your code working you would write it like this:

export const UserStore = new User() means you are exporting variable UserStore and variable can not be use as type (but classes can). You have to export class UserStore use it in interface userStore?: User

It is inside the logging function that the decision to do something is made, which is why logging.debug has to at least be entered. Your logme function is run and evaluated before then so that its result can be passed in, which is why you see "I was executed ?" printed.

Update logMe method to return new instant of Uint8Array so will not have the logMe method.

This will just log nothing because the binding is one-way only. If you want to view the input value in the greet variable use ngModel instead.

For that import FormsModule in your app.module.ts and change the code in following way:

Define variable and assign timer to it when you're calling logMe function: